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Revenue from Customers (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Backlog By Segment

The following table presents the Company’s backlog, by segment:

									December 31,
															2021						2020
Transportation Solutions Backlog															$	963,267					$	898,183
E-Infrastructure Solutions Backlog															432,613						192,049
Building Solutions Backlog - Commercial															97,235						85,156
Total Backlog															$	1,493,115					$	1,175,388

Disaggregation of Revenue

The following tables present the Company’s revenue disaggregated by major end market and contract type:

									Years Ended December 31,
Revenues by major end market															2021						2020						2019
Heavy Highway															$	572,902					$	526,561					$	483,175
Aviation															119,327						109,894						141,371
Water Containment and Treatment															58,100						69,922						65,795
Other															45,253						47,447						69,984
Transportation Solutions Revenues															795,582						753,824						760,325
E-Infrastructure Solutions Revenues															468,784						397,253						84,637
Residential															209,201						164,694						153,129
Commercial															108,199						111,641						128,187
Building Solutions Revenues															317,400						276,335						281,316
Total Revenues															$	1,581,766					$	1,427,412					$	1,126,278
Revenues by contract type
Fixed-Unit Price															$	871,832					$	843,401					$	708,638
Lump Sum															494,590						389,045						262,237
Residential and Other															215,344						194,966						155,403
Total Revenues															$	1,581,766					$	1,427,412					$	1,126,278

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045

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X

- Definition

Tabular disclosure of expected timing for satisfying remaining performance obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

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